Please help are these right? A 2.3 mole sample of nitrogen (N2), has a volume of 50.0 L and a pressure of 630 mmHg. What is the temperature of the gas?
41.5 C which I converted to Kelvin and got 231.5K

Calculate the molarity (M) of the following solutions:

A) 2.0 moles of glucose in 340 ml of glucose solution.5.88 M glucose solution is what I got

B) 4.0 g of KOH in 2 L of KOH Solution.
0.036 M KOH solution is what I got.